Re: [PATCH 3/3] RDMA/rtrs-clt: Kill xchg_paths

[kernel test robot <lkp@intel.com>]

Hi Guoqing,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on rdma/for-next]
[also build test ERROR on linus/master v6.0-rc3 next-20220901]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Guoqing-Jiang/misc-changes-for-rtrs/20220902-182137
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next
config: parisc64-allmodconfig (https://download.01.org/0day-ci/archive/20220903/202209030331.GmBYWKZb-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/1cb28fde63a272543476132ec83f6eb121111fae
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Guoqing-Jiang/misc-changes-for-rtrs/20220902-182137
        git checkout 1cb28fde63a272543476132ec83f6eb121111fae
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash drivers/infiniband/ulp/rtrs/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/linux/atomic.h:80,
                    from arch/parisc/include/asm/bitops.h:13,
                    from include/linux/bitops.h:67,
                    from include/linux/log2.h:12,
                    from include/asm-generic/div64.h:55,
                    from ./arch/parisc/include/generated/asm/div64.h:1,
                    from include/linux/math.h:6,
                    from include/linux/math64.h:6,
                    from include/linux/time.h:6,
                    from include/linux/stat.h:19,
                    from include/linux/module.h:13,
                    from drivers/infiniband/ulp/rtrs/rtrs-clt.c:13:
   drivers/infiniband/ulp/rtrs/rtrs-clt.c: In function 'rtrs_clt_remove_path_from_arr':
>> include/linux/atomic/atomic-arch-fallback.h:90:34: error: initialization of 'struct rtrs_clt_path **' from incompatible pointer type 'struct rtrs_clt_path *' [-Werror=incompatible-pointer-types]
      90 |         typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
         |                                  ^
   include/linux/atomic/atomic-instrumented.h:1978:9: note: in expansion of macro 'arch_try_cmpxchg'
    1978 |         arch_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
         |         ^~~~~~~~~~~~~~~~
   drivers/infiniband/ulp/rtrs/rtrs-clt.c:2297:21: note: in expansion of macro 'try_cmpxchg'
    2297 |                 if (try_cmpxchg((typeof(ppcpu_path))ppcpu_path, clt_path, next))
         |                     ^~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +90 include/linux/atomic/atomic-arch-fallback.h

29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  86  
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  87  #ifndef arch_try_cmpxchg
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  88  #define arch_try_cmpxchg(_ptr, _oldp, _new) \
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  89  ({ \
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29 @90  	typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  91  	___r = arch_cmpxchg((_ptr), ___o, (_new)); \
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  92  	if (unlikely(___r != ___o)) \
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  93  		*___op = ___r; \
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  94  	likely(___r == ___o); \
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  95  })
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  96  #endif /* arch_try_cmpxchg */
29f006fdefe6f8 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-08-29  97  

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